Gas grill



FIG. 1 is a front view of a gas grill showing our new design;

FIG. 2 is a left side view thereof;

FIG. 3 is a top plan view thereof; and,

FIG. 4 is a front and left-side perspective view thereof.

The details shown in broken lines form no part of the claimed design.

We claim the ornamental design for a gas grill, as shown and described.